Experimental Study and Proposal to Improve the EWM Design of Cold-Formed Steel Lipped Channel Columns with Circular Holes under Axial Compression

Table 3

Comparison on ultimate loads between FE analysis results and predicted results.

L (mm)	h (mm)	b (mm)	a (mm)	t (mm)	fy (MPa)	Number of holes	Hole spacing (mm)	d (mm)	Pa (kN)	Pc (kN)	Pa/Pc
300	90	16	7.5	1	550	0	0	0	45.19	43.84	1.031
300	90	16	7.5	1	550	1	0	27	45.09	43.29	1.042
300	90	16	7.5	1	550	1	0	45	41.02	40.19	1.021
300	90	16	7.5	1	550	1	0	63	36.13	33.95	1.064
300	100	16	7.5	1	550	0	0	0	45.88	43.58	1.053
300	100	16	7.5	1	550	1	0	30	44.34	43.02	1.031
300	100	16	7.5	1	550	1	0	50	44.13	41.47	1.064
300	100	16	7.5	1	550	1	0	70	37.43	36.68	1.020
600	90	40	12	1	280	1	0	27	31.55	30.27	1.042
600	90	40	12	1	280	1	0	63	20.75	18.56	1.118
600	75	36	12	1.2	350	1	0	22.5	43.56	43.05	1.012
600	75	36	12	1.2	350	1	0	52.5	27.09	24.50	1.106
600	100	48	12	1	550	1	0	30	45.96	42.40	1.084
600	100	48	12	1	550	1	0	70	32.52	29.58	1.099
1000	90	40	12	1	280	0	0	0	36.14	33.86	1.067
1000	90	40	12	1	280	1	0	27	35.64	33.56	1.062
1000	90	40	12	1	280	1	0	45	33.96	31.20	1.088
1000	90	40	12	1	280	1	0	63	29.90	28.12	1.063
1000	75	38	8	1	550	0	0	0	42.78	40.59	1.054
1000	75	38	8	1	550	1	0	22.5	42.37	40.19	1.054
1000	75	38	8	1	550	1	0	37.5	40.19	37.52	1.071
1000	75	38	8	1	550	1	0	52.5	36.63	34.35	1.066
1500	90	40	12	1	280	0	0	0	33.96	31.09	1.092
1500	90	40	12	1	280	3	500	27	33.07	30.69	1.078
1500	90	40	12	1	280	3	500	45	30.89	28.23	1.094
1500	90	40	12	1	280	3	500	63	27.84	26.15	1.065
1500	76	38	8	1	550	0	0	0	34.95	32.27	1.083
1500	76	38	8	1	550	3	500	22.5	34.46	31.88	1.081
1500	76	38	8	1	550	3	500	37.5	31.19	28.93	1.078
1500	76	38	8	1	550	3	500	52.5	27.52	25.34	1.086
3000	90	40	12	1	280	6	500	26.7	9.21	9.04	1.019
3000	90	40	12	1	280	6	500	62.3	7.87	7.86	1.001
3000	75	36	12	1.2	350	6	500	21	7.63	7.05	1.082
3000	75	36	12	1.2	350	6	500	49	6.67	6.83	0.977
3000	100	48	12	1	550	6	500	30	13.66	13.24	1.032
3000	100	48	12	1	550	6	500	70	12.61	12.84	0.982
Average											1.0614
Standard deviation											0.0286
Coefficient of variation											0.0243